From Longman Dictionary of Contemporary Englishdiscdisc (also disk especially American English) /dɪsk/ ●●○S3W3 noun [countable]1CFCIRCLEa roundflatshape or objectthree keys attached to a metal disc2TCRa compactdisc3TCRa record that you play on a record player4British EnglishTD a computer diskon discThe report form is available on disc from Personnel.5HBHMa flat piece of cartilage between the bones of your backHe retired early because of a slipped disc (=one that has moved out of its correct place). →disc brakes, disc jockey, disk drive, laser disk